So after upgrading to ACF Pro 5.6.1 I was happy to see the message that the Link field (which I’d previously been using the Advanced Custom Fields: Link plugin for) was now built in. I dutifully ran the migration and deactivated the plugin.
Unfortunately now, none of my link fields work. Nor do any new link fields I create.
The field appears in my ACF field list, but is not interactive. Nothing happens when I click on any of the buttons. No errors appear on screen or in the developer console. Just nothing at all.
Environment details:
Server: Ubuntu 14.04.5 LTS
Web server: Nginx
PHP version: 5.5.9
Wordpress version: 4.8.1
OK, so while I was troubleshooting another issue, I disabled, deleted and then re-installed ACF Pro and then rebooted my server. Seems to have cleared up this issue. Guessing something was cached somewhere?